In casserole dish, mix spaghetti sauce, mushrooms, tamari or soy sauce, and oregano. Add vegetable broth to thin the sauce a bit. Stir the garlic and sea salt into the rice, then stir this into the sauce. Add greens and toss to liberally coat the leaves. Bake in 350 degree oven for about 12 minutes. Cover the top with a generous amount of nutritional yeast and serve.